<template>
  <view :id="attrs.id" :class="'_block _'+name+' '+attrs.class" :style="attrs.style">
    <block v-for="(n, i) in childs" v-bind:key="i">
      <!-- 图片 -->
      <!-- 占位图 -->
      <image v-if="n.name==='img'&&!n.t&&((opts[1]&&!ctrl[i])||ctrl[i]<0)" class="_img" :style="n.attrs.style" :src="ctrl[i]<0?opts[2]:opts[1]" mode="widthFix" />
      <!-- 显示图片 -->
      <!-- #ifdef H5 || (APP-PLUS && VUE2) -->
      <img v-if="n.name==='img'" :id="n.attrs.id" :class="'_img '+n.attrs.class" :style="(ctrl[i]===-1?'display:none;':'')+n.attrs.style" :src="n.attrs.src||(ctrl.load?n.attrs['data-src']:'')" :data-i="i" @load="imgLoad" @error="mediaError" @tap.stop="imgTap" @longpress="imgLongTap" />
      <!-- #endif -->
      <!-- #ifndef H5 || (APP-PLUS && VUE2) -->
      <!-- 表格中的图片，使用 rich-text 防止大小不正确 -->
      <rich-text v-if="n.name==='img'&&n.t" :style="'display:'+n.t" :nodes="[{attrs:{style:n.attrs.style||'',src:n.attrs.src},name:'img'}]" :data-i="i" @tap.stop="imgTap" />
      <!-- #endif -->
      <!-- #ifndef H5 || APP-PLUS || MP-KUAISHOU -->
      <image v-else-if="n.name==='img'" :id="n.attrs.id" :class="'_img '+n.attrs.class" :style="(ctrl[i]===-1?'display:none;':'')+'width:'+(ctrl[i]||1)+'px;height:1px;'+n.attrs.style" :src="n.attrs.src" :mode="!n.h?'widthFix':(!n.w?'heightFix':(n.m||'scaleToFill'))" :lazy-load="opts[0]" :webp="n.webp" :show-menu-by-longpress="opts[3]&&!n.attrs.ignore" :image-menu-prevent="!opts[3]||n.attrs.ignore" :data-i="i" @load="imgLoad" @error="mediaError" @tap.stop="imgTap" @longpress="imgLongTap" />
      <!-- #endif -->
      <!-- #ifdef MP-KUAISHOU -->
      <image v-else-if="n.name==='img'" :id="n.attrs.id" :class="'_img '+n.attrs.class" :style="(ctrl[i]===-1?'display:none;':'')+n.attrs.style" :src="n.attrs.src" :lazy-load="opts[0]" :data-i="i" @load="imgLoad" @error="mediaError" @tap.stop="imgTap"></image>
      <!-- #endif -->
      <!-- #ifdef APP-PLUS && VUE3 -->
      <image v-else-if="n.name==='img'" :id="n.attrs.id" :class="'_img '+n.attrs.class" :style="(ctrl[i]===-1?'display:none;':'')+'width:'+(ctrl[i]||1)+'px;'+n.attrs.style" :src="n.attrs.src||(ctrl.load?n.attrs['data-src']:'')" :mode="!n.h?'widthFix':(!n.w?'heightFix':(n.m||''))" :data-i="i" @load="imgLoad" @error="mediaError" @tap.stop="imgTap" @longpress="imgLongTap" />
      <!-- #endif -->
      <!-- 文本 -->
      <!-- #ifdef MP-WEIXIN -->
      <text v-else-if="n.text" :user-select="opts[4]=='force'&&isiOS" decode>{{n.text}}</text>
      <!-- #endif -->
      <!-- #ifndef MP-WEIXIN || MP-BAIDU || MP-ALIPAY || MP-TOUTIAO -->
      <text v-else-if="n.text" decode>{{n.text}}</text>
      <!-- #endif -->
      <text v-else-if="n.name==='br'">\n</text>
      <!-- 链接 -->
      <view v-else-if="n.name==='a'" :id="n.attrs.id" :class="(n.attrs.href?'_a ':'')+n.attrs.class" hover-class="_hover" :style="'display:inline;'+n.attrs.style" :data-i="i" @tap.stop="linkTap">
        <node name="span" :childs="n.children" :opts="opts" style="display:inherit" />
      </view>
      <!-- 视频 -->
      <!-- #ifdef APP-PLUS -->
      <view v-else-if="n.html" :id="n.attrs.id" :class="'_video '+n.attrs.class" :style="n.attrs.style" v-html="n.html" @vplay.stop="play" />
      <!-- #endif -->
      <!-- #ifndef APP-PLUS -->
      <video v-else-if="n.name==='video'" :id="n.attrs.id" :class="n.attrs.class" :style="n.attrs.style" :autoplay="n.attrs.autoplay" :controls="n.attrs.controls" :loop="n.attrs.loop" :muted="n.attrs.muted" :object-fit="n.attrs['object-fit']" :poster="n.attrs.poster" :src="n.src[ctrl[i]||0]" :data-i="i" @play="play" @error="mediaError" />
      <!-- #endif -->
      <!-- #ifdef H5 || APP-PLUS -->
      <iframe v-else-if="n.name==='iframe'" :style="n.attrs.style" :allowfullscreen="n.attrs.allowfullscreen" :frameborder="n.attrs.frameborder" :src="n.attrs.src" />
      <embed v-else-if="n.name==='embed'" :style="n.attrs.style" :src="n.attrs.src" />
      <!-- #endif -->
      <!-- #ifndef MP-TOUTIAO || ((H5 || APP-PLUS) && VUE3) -->
      <!-- 音频 -->
      <audio v-else-if="n.name==='audio'" :id="n.attrs.id" :class="n.attrs.class" :style="n.attrs.style" :author="n.attrs.author" :controls="n.attrs.controls" :loop="n.attrs.loop" :name="n.attrs.name" :poster="n.attrs.poster" :src="n.src[ctrl[i]||0]" :data-i="i" @play="play" @error="mediaError" />
      <!-- #endif -->
      <view v-else-if="(n.name==='table'&&n.c)||n.name==='li'" :id="n.attrs.id" :class="'_'+n.name+' '+n.attrs.class" :style="n.attrs.style">
        <node v-if="n.name==='li'" :childs="n.children" :opts="opts" />
        <view v-else v-for="(tbody, x) in n.children" v-bind:key="x" :class="'_'+tbody.name+' '+tbody.attrs.class" :style="tbody.attrs.style">
          <node v-if="tbody.name==='td'||tbody.name==='th'" :childs="tbody.children" :opts="opts" />
          <block v-else v-for="(tr, y) in tbody.children" v-bind:key="y">
            <view v-if="tr.name==='td'||tr.name==='th'" :class="'_'+tr.name+' '+tr.attrs.class" :style="tr.attrs.style">
              <node :childs="tr.children" :opts="opts" />
            </view>
            <view v-else :class="'_'+tr.name+' '+tr.attrs.class" :style="tr.attrs.style">
              <view v-for="(td, z) in tr.children" v-bind:key="z" :class="'_'+td.name+' '+td.attrs.class" :style="td.attrs.style">
                <node :childs="td.children" :opts="opts" />
              </view>
            </view>
          </block>
        </view>
      </view>
      <!-- insert -->
      <!-- 富文本 -->
      <!-- #ifdef H5 || ((MP-WEIXIN || MP-QQ || APP-PLUS || MP-360) && VUE2) -->
      <rich-text v-else-if="!n.c&&!handler.isInline(n.name, n.attrs.style)" :id="n.attrs.id" :style="n.f" :user-select="opts[4]" :nodes="[n]" />
      <!-- #endif -->
      <!-- #ifndef H5 || ((MP-WEIXIN || MP-QQ || APP-PLUS || MP-360) && VUE2) -->
      <rich-text v-else-if="!n.c" :id="n.attrs.id" :style="'display:inline;'+n.f" :preview="false" :selectable="opts[4]" :user-select="opts[4]" :nodes="[n]" />
      <!-- #endif -->
      <!-- 继续递归 -->
      <view v-else-if="n.c===2" :id="n.attrs.id" :class="'_block _'+n.name+' '+n.attrs.class" :style="n.f+';'+n.attrs.style">
        <node v-for="(n2, j) in n.children" v-bind:key="j" :style="n2.f" :name="n2.name" :attrs="n2.attrs" :childs="n2.children" :opts="opts" />
      </view>
      <node v-else :style="n.f" :name="n.name" :attrs="n.attrs" :childs="n.children" :opts="opts" />
    </block>
  </view>
</template>
<script module="handler" lang="wxs">
  // 行内标签列表
  var inlineTags = {
    abbr: true,
    b: true,
    big: true,
    code: true,
    del: true,
    em: true,
    i: true,
    ins: true,
    label: true,
    q: true,
    small: true,
    span: true,
    strong: true,
    sub: true,
    sup: true
  }
  /**
   * @description 判断是否为行内标签
   */
  module.exports = {
    isInline: function (tagName, style) {
      return inlineTags[tagName] || (style || '').indexOf('display:inline') !== -1
    }
  }
</script>
<script>
  import node from './node'
  import { hideLoading, showLoading } from '@/utils/tools'
  export default {
    name: 'node',
    options: {
      // #ifdef MP-WEIXIN
      virtualHost: true,
      // #endif
      // #ifdef MP-TOUTIAO
      addGlobalClass: false
      // #endif
    },
    data () {
      return {
        ctrl: {},
        // #ifdef MP-WEIXIN
        isiOS: uni.getSystemInfoSync().system.includes('iOS')
        // #endif
      }
    },
    props: {
      name: String,
      attrs: {
        type: Object,
        default () {
          return {}
        }
      },
      childs: Array,
      opts: Array
    },
    components: {
      // #ifndef (H5 || APP-PLUS) && VUE3
      node
      // #endif
    },
    mounted () {
      this.$nextTick(() => {
        for (this.root = this.$parent; this.root.$options.name !== 'mp-html'; this.root = this.root.$parent);
      })
      // #ifdef H5 || APP-PLUS
      if (this.opts[0]) {
        let i
        for (i = this.childs.length; i--;) {
          if (this.childs[i].name === 'img') break
        }
        if (i !== -1) {
          this.observer = uni.createIntersectionObserver(this).relativeToViewport({
            top: 500,
            bottom: 500
          })
          this.observer.observe('._img', res => {
            if (res.intersectionRatio) {
              this.$set(this.ctrl, 'load', 1)
              this.observer.disconnect()
            }
          })
        }
      }
      // #endif
    },
    beforeDestroy () {
      // #ifdef H5 || APP-PLUS
      if (this.observer) {
        this.observer.disconnect()
      }
      // #endif
    },
    methods: {
      // #ifdef MP-WEIXIN
      toJSON () { return this },
      // #endif
      /**
       * @description 播放视频事件
       * @param {Event} e
       */
      play (e) {
        const i = e.currentTarget.dataset.i
        const node = this.childs[i]
        this.root.$emit('play', {
          source: node.name,
          attrs: {
            ...node.attrs,
            src: node.src[this.ctrl[i] || 0]
          }
        })
        // #ifndef APP-PLUS
        if (this.root.pauseVideo) {
          let flag = false
          const id = e.target.id
          for (let i = this.root._videos.length; i--;) {
            if (this.root._videos[i].id === id) {
              flag = true
            } else {
              this.root._videos[i].pause() // 自动暂停其他视频
            }
          }
          // 将自己加入列表
          if (!flag) {
            const ctx = uni.createVideoContext(id
              // #ifndef MP-BAIDU
              , this
              // #endif
            )
            ctx.id = id
            if (this.root.playbackRate) {
              ctx.playbackRate(this.root.playbackRate)
            }
            this.root._videos.push(ctx)
          }
        }
        // #endif
      },

      /**
       * @description 图片点击事件
       * @param {Event} e
       */
      imgTap (e) {
        const node = this.childs[e.currentTarget.dataset.i]
        if (node.a) {
          this.linkTap(node.a)
          return
        }
        if (node.attrs.ignore) return
        // #ifdef H5 || APP-PLUS
        node.attrs.src = node.attrs.src || node.attrs['data-src']
        // #endif
        this.root.$emit('imgtap', node.attrs)
        // 自动预览图片
        if (this.root.previewImg) {
          uni.previewImage({
            // #ifdef MP-WEIXIN
            showmenu: this.root.showImgMenu,
            // #endif
            // #ifdef MP-ALIPAY
            enablesavephoto: this.root.showImgMenu,
            enableShowPhotoDownload: this.root.showImgMenu,
            // #endif
            current: parseInt(node.attrs.i),
            urls: this.root.imgList
          })
        }
      },

      /**
       * @description 图片长按
       */
      imgLongTap (e) {
        // #ifdef APP-PLUS
        const attrs = this.childs[e.currentTarget.dataset.i].attrs
        if (this.opts[3] && !attrs.ignore) {
          uni.showActionSheet({
            itemList: ['保存图片'],
            success: () => {
              const save = path => {
                uni.saveImageToPhotosAlbum({
                  filePath: path,
                  success () {
                    uni.showToast({
                      title: '保存成功'
                    })
                  }
                })
              }
              if (this.root.imgList[attrs.i].startsWith('http')) {
                uni.downloadFile({
                  url: this.root.imgList[attrs.i],
                  success: res => save(res.tempFilePath)
                })
              } else {
                save(this.root.imgList[attrs.i])
              }
            }
          })
        }
        // #endif
      },

      /**
       * @description 图片加载完成事件
       * @param {Event} e
       */
      imgLoad (e) {
        const i = e.currentTarget.dataset.i
        /* #ifndef H5 || (APP-PLUS && VUE2) */
        if (!this.childs[i].w) {
          // 设置原宽度
          this.$set(this.ctrl, i, e.detail.width)
        } else /* #endif */ if ((this.opts[1] && !this.ctrl[i]) || this.ctrl[i] === -1) {
          // 加载完毕，取消加载中占位图
          this.$set(this.ctrl, i, 1)
        }
        this.checkReady()
      },

      /**
       * @description 检查是否所有图片加载完毕
       */
      checkReady () {
        if (this.root && !this.root.lazyLoad) {
          this.root._unloadimgs -= 1
          if (!this.root._unloadimgs) {
            setTimeout(() => {
              this.root.getRect().then(rect => {
                this.root.$emit('ready', rect)
              }).catch(() => {
                this.root.$emit('ready', {})
              })
            }, 350)
          }
        }
      },

      /**
       * @description 链接点击事件
       * @param {Event} e
       */
      linkTap (e) {
        const node = e.currentTarget ? this.childs[e.currentTarget.dataset.i] : {}
        const attrs = node.attrs || e
        const href = attrs.href
        this.root.$emit('linktap', Object.assign({
          innerText: this.root.getText(node.children || []) // 链接内的文本内容
        }, attrs))
        if (href) {
          if (href[0] === '#') {
            // 跳转锚点
            this.root.navigateTo(href.substring(1)).catch(() => { })
          } else if (href.split('?')[0].includes('://')) {
            // 复制外部链接
            if (this.root.copyLink) {
              // #ifdef H5
              window.open(href)
              // #endif
              // #ifdef MP
              const secureDomainName = /https:\/\/pro.star.ihehang.com/.test(href)
              const isFile = ['doc','xls','ppt','pdf','docx','xlsx','pptx'].indexOf(href.substring(href.lastIndexOf('.')+1)) > -1
              if(secureDomainName && isFile){
                showLoading('加载文件中...')
                uni.downloadFile({
                  url: href,
                  success: (res) => {
                    var filePath = res.tempFilePath;
                    uni.openDocument({
                      filePath:filePath,
                      showMenu:true,
                      success:(res) => {
                        hideLoading()
                      },
                      fail:(err) => {
                        hideLoading()
                      }
                    })
                  },
                });
              }else{
                uni.setClipboardData({
                  data: href,
                  success: () =>
                    uni.showToast({
                      title: '链接已复制'
                    })
                })
              }

              // #endif
              // #ifdef APP-PLUS
              plus.runtime.openWeb(href)
              // #endif
            }
          } else {
            // 跳转页面
            uni.navigateTo({
              url: href,
              fail () {
                uni.switchTab({
                  url: href,
                  fail () { }
                })
              }
            })
          }
        }
      },

      /**
       * @description 错误事件
       * @param {Event} e
       */
      mediaError (e) {
        const i = e.currentTarget.dataset.i
        const node = this.childs[i]
        // 加载其他源
        if (node.name === 'video' || node.name === 'audio') {
          let index = (this.ctrl[i] || 0) + 1
          if (index > node.src.length) {
            index = 0
          }
          if (index < node.src.length) {
            this.$set(this.ctrl, i, index)
            return
          }
        } else if (node.name === 'img') {
          // #ifdef H5 && VUE3
          if (this.opts[0] && !this.ctrl.load) return
          // #endif
          // 显示错误占位图
          if (this.opts[2]) {
            this.$set(this.ctrl, i, -1)
          }
          this.checkReady()
        }
        if (this.root) {
          this.root.$emit('error', {
            source: node.name,
            attrs: node.attrs,
            // #ifndef H5 && VUE3
            errMsg: e.detail.errMsg
            // #endif
          })
        }
      }
    }
  }
</script>
<style>
  /* a 标签默认效果 */
  ._a {
    padding: 1.5px 0 1.5px 0;
    color: #366092;
    word-break: break-all;
  }

  /* a 标签点击态效果 */
  ._hover {
    text-decoration: underline;
    opacity: 0.7;
  }

  /* 图片默认效果 */
  ._img {
    max-width: 100%;
    -webkit-touch-callout: none;
  }

  /* 内部样式 */

  ._block {
    display: block;
  }

  ._b,
  ._strong {
    font-weight: bold;
  }

  ._code {
    font-family: monospace;
  }

  ._del {
    text-decoration: line-through;
  }

  ._em,
  ._i {
    font-style: italic;
  }

  ._h1 {
    font-size: 2em;
  }

  ._h2 {
    font-size: 1.5em;
  }

  ._h3 {
    font-size: 1.17em;
  }

  ._h5 {
    font-size: 0.83em;
  }

  ._h6 {
    font-size: 0.67em;
  }

  ._h1,
  ._h2,
  ._h3,
  ._h4,
  ._h5,
  ._h6 {
    display: block;
    font-weight: bold;
  }

  ._image {
    height: 1px;
  }

  ._ins {
    text-decoration: underline;
  }

  ._li {
    display: list-item;
  }

  ._ol {
    list-style-type: decimal;
  }

  ._ol,
  ._ul {
    display: block;
    padding-left: 40px;
    margin: 1em 0;
  }

  ._q::before {
    content: '"';
  }

  ._q::after {
    content: '"';
  }

  ._sub {
    font-size: smaller;
    vertical-align: sub;
  }

  ._sup {
    font-size: smaller;
    vertical-align: super;
  }

  ._thead,
  ._tbody,
  ._tfoot {
    display: table-row-group;
  }

  ._tr {
    display: table-row;
  }

  ._td,
  ._th {
    display: table-cell;
    vertical-align: middle;
  }

  ._th {
    font-weight: bold;
    text-align: center;
  }

  ._ul {
    list-style-type: disc;
  }

  ._ul ._ul {
    margin: 0;
    list-style-type: circle;
  }

  ._ul ._ul ._ul {
    list-style-type: square;
  }

  ._abbr,
  ._b,
  ._code,
  ._del,
  ._em,
  ._i,
  ._ins,
  ._label,
  ._q,
  ._span,
  ._strong,
  ._sub,
  ._sup {
    display: inline;
  }

  /* #ifdef APP-PLUS */
  ._video {
    width: 300px;
    height: 225px;
  }
  /* #endif */
</style>
